US2023268625A1PendingUtilityA1
Lithium secondary battery
Est. expiryNov 2, 2040(~14.3 yrs left)· nominal 20-yr term from priority
H01M 4/0445H01M 4/382H01M 4/0404H01M 2004/027H01M 4/134H01M 4/661H01M 50/536H01M 10/0525Y02E60/10H01M 4/1395H01M 10/0585H01M 10/052H01M 2004/021
64
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Claims
Abstract
The purpose of the present invention is to provide a lithium secondary battery having an excellent cycle characteristic. A lithium secondary battery according to an embodiment includes a positive electrode, and a negative electrode not having a negative electrode active material. The negative electrode is configured as Cu having a surface roughness maximum height Rz of 1.0 µm or less and an orientation plane of a plane.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A lithium secondary battery, comprising:
a positive electrode; and a negative electrode not having a negative electrode active material, wherein the negative electrode is Cu having a surface roughness maximum height Rz of 1.0 µm or less and an orientation plane of a ( 200 ) plane or a ( 220 ) plane.
2 . The lithium secondary battery according to claim 1 , wherein the Cu is formed by rolling.
3 . The lithium secondary battery according to claim 1 , wherein a lithium metal is precipitated on the surface of the negative electrode, and the precipitated lithium metal is dissolved to perform charging/discharging.
4 . The lithium secondary battery according to any one of claims 1 , wherein the negative electrode does not have a lithium foil on the surface thereof before initial charge.
5 . The lithium secondary battery according to any one of claims 1 , wherein the battery has an energy density of 350 Wh/kg or more.Cited by (0)
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